EP0578564A1 - Kühlungseinrichtung für eine Kraftwagenmaschine - Google Patents

Kühlungseinrichtung für eine Kraftwagenmaschine Download PDF

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Publication number
EP0578564A1
EP0578564A1 EP93401755A EP93401755A EP0578564A1 EP 0578564 A1 EP0578564 A1 EP 0578564A1 EP 93401755 A EP93401755 A EP 93401755A EP 93401755 A EP93401755 A EP 93401755A EP 0578564 A1 EP0578564 A1 EP 0578564A1
Authority
EP
European Patent Office
Prior art keywords
air flow
speed
cooling fluid
control means
flow rate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP93401755A
Other languages
English (en)
French (fr)
Inventor
Hervé Couetoux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Thermique Moteur SA
Original Assignee
Valeo Thermique Moteur SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Thermique Moteur SA filed Critical Valeo Thermique Moteur SA
Publication of EP0578564A1 publication Critical patent/EP0578564A1/de
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/026—Thermostatic control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
    • F01P7/048—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using electrical drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements
    • F01P2005/125—Driving auxiliary pumps electrically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2023/00—Signal processing; Details thereof
    • F01P2023/08—Microprocessor; Microcomputer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/32—Engine outcoming fluid temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/60—Operating parameters
    • F01P2025/62—Load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/60—Operating parameters
    • F01P2025/64—Number of revolutions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/60—Operating parameters
    • F01P2025/66—Vehicle speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/08—Cabin heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/10—Fuel manifold
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed

Definitions

  • the invention relates to a cooling device for a motor vehicle engine.
  • Such a cooling device usually comprises a heat exchanger, called a cooling radiator, capable of being traversed by a cooling fluid, generally water containing an antifreeze, and being swept by a flow of air, thus that at least one means for controlling the flow rate of the air flow sweeping the heat exchanger, this control means having several different states.
  • a cooling fluid generally water containing an antifreeze
  • this control means consists of a fan with several speed states, capable of modifying the flow rate of the air flow through the heat exchanger.
  • a set of pivoting flaps is also sometimes used which can be placed in different opening positions to modify the air flow rate through the heat exchanger, while influencing the aerodynamic penetration coefficient of the motor vehicle.
  • control means makes it possible to modify the flow rate of the air flow which sweeps the heat exchanger and which, in the absence of such a control means, would be due to the natural sweeping of the air. , which depends on the speed of the vehicle.
  • the states of the air flow rate control means are controlled by means of an element sensitive to the temperature of the cooling fluid passing through the heat exchanger.
  • the invention precisely makes it possible to solve these difficulties by proposing a cooling device of a new type capable of taking into account other parameters than the only temperature parameter which is traditionally used for controlling the control means.
  • the means for controlling the flow control means of the air flow operate taking into account the action of the cooling fluid, the flow of which is decreasing or increasing through the heat exchanger, and the efficiency of this heat exchanger which depends on the speed of the motor vehicle.
  • these control means thus make it possible to act, in advance, on the control of the means for controlling the flow rate of the air flow.
  • control means operate as a function, on the one hand, of the position of the first quantity (representative of the speed of the vehicle), in a predetermined series of adjacent ranges of filtered speed, previously defined, and on the other hand , of the second quantity (representative of the flow rate of the coolant flowing through the heat exchanger).
  • each of the first and second functions comprises the comparison of the second quantity with a threshold which depends on the position of the first quantity in said predetermined series of adjacent ranges of speeds, and the choice, depending on whether the second quantity (representative of the flow rate of the cooling fluid) is less than or greater than the threshold, between a control state corresponding at most to the holding, or else to the acceleration of the air flow rate.
  • each of the first and second functions compares the quantity representative of the flow rate with a predetermined threshold.
  • the first and second electronic means comprise two tables defining two respective laws for the state of the first and of the second commands as a function of values of the second quantity, and of the speed ranges .
  • each of the first and second commands is capable of four different states corresponding to a maximum air flow, average air flow, minimum air flow and unchanged air flow. These different states are chosen for each particular case.
  • the second quantity takes into account the current value of the cooling fluid flow as well as its previous value.
  • This second quantity can be constituted by any quantity representative of the flow rate of the cooling fluid flowing through the heat exchanger.
  • this second quantity is provided by a pair of values, one of which is the electric supply voltage of an electric pump ensuring the circulation of the cooling fluid in the heat exchanger, and the other is related to the position of one valve regulating the flow of coolant in the heat exchanger.
  • the means for controlling the flow of the air flow consists of a fan having several different speed states and / or by a set of flaps having several different opening states.
  • FIG. 1 shows an internal combustion engine 10 of a motor vehicle, provided with a cooling circuit.
  • the engine 10 is cooled by a cooling fluid, for example water with antifreeze, which leaves the engine 10 via an outlet duct 12, then travels through a main heat exchanger 14 (called cooling radiator) and returns to then the engine by an inlet duct 16.
  • the circulation of the cooling fluid is carried out by means of a pump 18 driven by an electric motor 20, the speed of which varies as a function of the electrical voltage applied to it.
  • the flow rate of the cooling fluid adjusted by the pump 18 is independent of the speed of rotation of the engine 10.
  • a flow metering valve On the outlet duct 12 is mounted, immediately upstream of the heat exchanger 14, a flow metering valve, here a valve 22 of the butterfly type actuated by a gear motor 24, to modify the flow rate of the cooling fluid. running through the heat exchanger 14.
  • the heat exchanger 14 is swept by an air flow (arrows F), the flow rate of which is regulated by two control means: on the one hand a fan 26 driven in rotation by an electric motor 28, and on the other hand a set of pivoting flaps 30 resembling a Venetian blind and actuated by a geared motor 32.
  • the motor 28 and the geared motor 32 are controlled by CMD control means.
  • the fan has three different speed states: zero speed, low speed, and high speed.
  • the flaps 30 can also take a finite number of different states from the fully closed state to the full open state.
  • the cooling circuit further comprises a bypass duct 34 connecting the ducts 12 and 16, and on which is mounted a secondary heat exchanger 36 serving as a radiator for heating the passenger compartment and an expansion tank 38.
  • the engine 10 comprises an intake manifold 40 connected to a bypass duct 42 connected to the duct 16, for heating the manifold.
  • the manifold 40 is provided with a sensor 44 providing an indication of the engine intake pressure.
  • the motor 10 is further provided with a tachometer 46 giving the speed of rotation of the motor, expressed in revolutions per minute.
  • the device further comprises a temperature sensor 48 mounted on the bypass duct 34, upstream of the secondary heat exchanger 36, and suitable for giving an indication of the temperature entering the secondary heat exchanger 36, but also in the main heat exchanger 14.
  • the device comprises a speed sensor 50 driven by the wheels 52 of the motor vehicle and capable of providing a digital quantity, representative of the speed of the vehicle, filtered on average in the short term.
  • This sensor gives an encrypted measurement according to a series of integer values with a step of 1 km / h, this measurement being updated periodically, for example every 1.5 s.
  • the speed value is taken into account by the control means CMD.
  • FIG. 2 shows an operating flow diagram of the cooling device of FIG. 1.
  • the device comprises control means 54, known in themselves, actuating the pump 18 and the valve 24; and which will be described in detail later.
  • the device further comprises CMD control means for actuating the fan 26 and the pivoting flaps 30, that is to say the means for controlling the flow rate of the air flow sweeping the heat exchanger 14.
  • the pressure sensor 44 supplies a pressure value (in kPa) representing the intake pressure of the engine, while the tachometer 46 gives the engine rotation speed in revolutions per minute (TPM). From an engine intake pressure (kPa) / engine speed (TPM) diagram, it is possible to calculate the engine load by calculation means 56 and determine two operating zones, a first zone with low load where the temperature of the coolant must not exceed a certain threshold, in the example 115 ° C, and a second zone corresponding to the maximum engine load, in which the temperature of the coolant must not exceed another threshold, in the example 100 ° C. By calculation means 58, it is thus determined which of the two temperature thresholds corresponds to the measurements delivered by the sensors 44 and 46.
  • the temperature measurement provided by the sensor 48 and giving the value of the temperature of the fluid at the inlet of the heat exchanger 14 is compared to the temperature threshold provided by the means 58. From this comparison, by the control means 54 the valve 24 and the pump 18.
  • steps are 12 in the example, each step being designated by an index from 0 to 11. For each of these 12 indices corresponds a given value of the flow in the heat exchanger 14, as shown in FIG. 3.
  • This figure shows, by way of example, the value of the flow rate of the cooling fluid (expressed in liters per hour) as a function of the index of the corresponding step.
  • index 0 corresponds a flow of 0 l / h
  • index 1 a flow of 130 l / h
  • index 2 a flow of 200 l / h
  • index 11 a flow rate of 3750 l / h.
  • this numerical quantity representative of the flow rate of the cooling fluid flowing through the heat exchanger, could be another quantity, for example a quantity directly linked to the electrical supply voltage of the pump 18, if none valve was not provided in the circuit.
  • the CMD control means actuate the fan 26 and the flaps 30 from first sensor means (sensor 50) capable of providing a first digital quantity G1, representative of the speed of the vehicle, filtered on average in the short term, and second means sensors (sensor 60) capable of providing a second digital quantity G2, representative of the flow rate of the coolant flowing through the heat exchanger.
  • first sensor means sensor 50
  • second means sensors sensor 60
  • the second sensor means 60 comprise all of the sensors 44, 46 and 48.
  • any other suitable means could be used to provide a numerical quantity representative of the flow rate of the cooling fluid flowing through the heat exchanger 14.
  • control means CMD operate according to two different functions, depending on whether the flow rate of the coolant is decreasing or increasing.
  • Said control means actuate either the first electronic means, by controlling the state of the air flow control means (in the example the fan 26) as a function of the first control CMD1 with several states, or the second electronic means control, by controlling the state of said air flow control means according to the second multi-state command.
  • the first and second electronic means comprise two tables TAB1 and TAB2 defining two respective laws for the state of the first and of the second command as a function of the value of the second quantity, and of the speed ranges.
  • the first electronic means operate when the cooling fluid flow rate is increasing, and this according to a law, the table of which is represented in two different ways in FIGS. 5 and 6.
  • FIG. 5 represents a three-dimensional diagram showing four speed ranges: V1 (speed of 0-19 km / h), V2 (speed of 20-49 km / h), V3 (speed of 50-89 km / h) and V4 (speed greater than 90 km / h).
  • each index corresponds to a pair of two consecutive step indices in FIG. 3.
  • the index 0 corresponds to the pair 0.1 in Figure 3, the index 1 to the pair 1.2 in Figure 3, etc. and the index 10 to the pair 10.11 in Figure 3.
  • the diagram of FIG. 5 also shows four states A, B, C, D corresponding respectively to four different states of the first command.
  • State A corresponds to a minimum air flow (zero fan speed), state B to an unchanged state, state C to an average air flow (fan setting at low speed) and the state D at maximum air flow (fan setting on high speed).
  • FIG. 6 translates, in tabular form, the three-dimensional diagram of FIG. 5.
  • the function of the first electronic control means includes the comparison of the second quantity G2 with a threshold which depends on the position of the first quantity G1 in the predetermined sequence of adjacent speed ranges, that is to say of the four ranges V1 at V4, and the choice, depending on whether the second quantity G2 is less than or greater than the threshold, between a control state corresponding at most to maintaining, or else to the acceleration of the air flow.
  • the fan is set to state A (fan speed zero) for all indices 0 to 10.
  • E corresponds to the setting of the fan at zero speed
  • F to the passage state of the fan at low speed if it is at high speed
  • G has an unchanged state
  • this second quantity takes into account the current value of the coolant flow as well as its value former.
  • the tables TAB1 and TAB2 each receive on the one hand a signal representing the value G1, and on the other hand a signal representing the value G2 after comparison with a table TAB3 representing the indices 0-11.
  • the quantity G2 is compared in electronic means forming a test to determine whether the value of the flow rate is increasing or decreasing and to control a switch I accordingly bringing into operation either the first command CMD1 or the second command CMD2.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Air-Conditioning For Vehicles (AREA)
EP93401755A 1992-07-06 1993-07-06 Kühlungseinrichtung für eine Kraftwagenmaschine Ceased EP0578564A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9208328 1992-07-06
FR929208328A FR2693231B1 (fr) 1992-07-06 1992-07-06 Dispositif de refroidissement pour moteur de véhicule automobile.

Publications (1)

Publication Number Publication Date
EP0578564A1 true EP0578564A1 (de) 1994-01-12

Family

ID=9431594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93401755A Ceased EP0578564A1 (de) 1992-07-06 1993-07-06 Kühlungseinrichtung für eine Kraftwagenmaschine

Country Status (5)

Country Link
EP (1) EP0578564A1 (de)
JP (1) JPH0688525A (de)
BR (1) BR9302745A (de)
FR (1) FR2693231B1 (de)
MX (1) MX9304020A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0952315A1 (de) * 1998-04-24 1999-10-27 GATE S.p.A. Steueranlage zur Minimalisierung des Energieverbrauchs in einem Kühlungssystem einer Brennkraftmaschine
FR2793842A1 (fr) * 1999-05-17 2000-11-24 Valeo Thermique Moteur Sa Dispositif electronique de regulation du refroidissement d'un moteur thermique de vehicule automobile
FR2808305A1 (fr) * 2000-04-27 2001-11-02 Valeo Thermique Moteur Sa Procede et dispositif de refroidissement d'un moteur thermique de vehicule
WO2002101210A1 (de) * 2001-06-12 2002-12-19 Robert Bosch Gmbh Verfahren zum überwachen eines kühlflüssigkeitskreislaufs einer brennkraftmaschine
WO2003056152A1 (de) * 2001-12-22 2003-07-10 Robert Bosch Gmbh Verfahren zur ansteuerung von elektrisch betätigbaren komponenten eines kühlsystems, computerprogramm, steuergerät, kühlsystem und brennkraftmaschine
FR2866604A1 (fr) * 2004-02-19 2005-08-26 Plastic Omnium Cie Dispositif d'amenee d'air de refroidissement pour vehicule, procede d'asservissement d'un dispositif d'obturation d'une entree d'air et calculateur mettant en oeuvre le procede
EP1564046A3 (de) * 2004-02-10 2006-07-19 Behr GmbH & Co. KG Verfahren zur Regelung einer Heizungsanordnung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040041347A (ko) * 2002-11-11 2004-05-17 현대자동차주식회사 자동차의 주행풍 가이드 장치
JP4384066B2 (ja) * 2005-02-18 2009-12-16 日産自動車株式会社 車両冷却システム
KR101679927B1 (ko) * 2014-12-09 2016-12-06 현대자동차주식회사 전기자동차용 냉각 시스템 및 그 방법
JP6606481B2 (ja) * 2016-09-07 2019-11-13 日立建機株式会社 ダンプトラック及び冷却ファン制御方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0254815A2 (de) * 1986-07-26 1988-02-03 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Kühlluftklappen- und Gebläsesteuerung für Kraftfahrzeuge
US4726325A (en) * 1986-03-28 1988-02-23 Aisin Seiki Kabushki Kaisha Cooling system controller for internal combustion engines
WO1989004419A1 (en) * 1987-11-12 1989-05-18 Robert Bosch Gmbh Device and process for cooling an engine
GB2218285A (en) * 1988-05-05 1989-11-08 Delco Prod Overseas Motor driven fan control

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4726325A (en) * 1986-03-28 1988-02-23 Aisin Seiki Kabushki Kaisha Cooling system controller for internal combustion engines
EP0254815A2 (de) * 1986-07-26 1988-02-03 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Kühlluftklappen- und Gebläsesteuerung für Kraftfahrzeuge
WO1989004419A1 (en) * 1987-11-12 1989-05-18 Robert Bosch Gmbh Device and process for cooling an engine
GB2218285A (en) * 1988-05-05 1989-11-08 Delco Prod Overseas Motor driven fan control

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0952315A1 (de) * 1998-04-24 1999-10-27 GATE S.p.A. Steueranlage zur Minimalisierung des Energieverbrauchs in einem Kühlungssystem einer Brennkraftmaschine
US6213061B1 (en) 1998-04-24 2001-04-10 Gate S.P.A. Control system for minimizing electricity consumption in a cooling system of an internal combustion engine
FR2793842A1 (fr) * 1999-05-17 2000-11-24 Valeo Thermique Moteur Sa Dispositif electronique de regulation du refroidissement d'un moteur thermique de vehicule automobile
FR2808305A1 (fr) * 2000-04-27 2001-11-02 Valeo Thermique Moteur Sa Procede et dispositif de refroidissement d'un moteur thermique de vehicule
WO2002101210A1 (de) * 2001-06-12 2002-12-19 Robert Bosch Gmbh Verfahren zum überwachen eines kühlflüssigkeitskreislaufs einer brennkraftmaschine
US6851399B2 (en) 2001-06-12 2005-02-08 Robert Bosch Gmbh Method for monitoring a coolant circuit of an internal combustion engine
WO2003056152A1 (de) * 2001-12-22 2003-07-10 Robert Bosch Gmbh Verfahren zur ansteuerung von elektrisch betätigbaren komponenten eines kühlsystems, computerprogramm, steuergerät, kühlsystem und brennkraftmaschine
EP1564046A3 (de) * 2004-02-10 2006-07-19 Behr GmbH & Co. KG Verfahren zur Regelung einer Heizungsanordnung
FR2866604A1 (fr) * 2004-02-19 2005-08-26 Plastic Omnium Cie Dispositif d'amenee d'air de refroidissement pour vehicule, procede d'asservissement d'un dispositif d'obturation d'une entree d'air et calculateur mettant en oeuvre le procede

Also Published As

Publication number Publication date
FR2693231A1 (fr) 1994-01-07
BR9302745A (pt) 1994-02-08
JPH0688525A (ja) 1994-03-29
FR2693231B1 (fr) 1994-09-30
MX9304020A (es) 1994-02-28

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